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Thread: How do we navigate to a page with the anchor link in Web Crawler program?

  1. #1
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    Default How do we navigate to a page with the anchor link in Web Crawler program?

    Hi,
    I am writing a web crawler and I am stuck again with a problem.
    How do we navigate to a page with the anchor link:

     <a id="dlstDepartments__ctl2_DepartmentsLink" onclick="return UpdateFrames('5');" 
              href="javascript:__doPostBack('dlstDepartments$_ctl2$DepartmentsLink','')">Beverages</a>
     
     
    and here is the Javascript code being called:
     
     
    function UpdateFrames(DID)
        {
            top.navbar.location.href="Aisles.aspx?ID="+DID;
            location.href="IconAisles.aspx?ID="+DID;
            return false;
        }
     
     
        function __doPostBack(eventTarget, eventArgument) {
            var theform;
            if (window.navigator.appName.toLowerCase().indexOf("microsoft") > -1) {
                theform = document.frmPageForm;
            }
            else {
                theform = document.forms["frmPageForm"];
            }
            theform.__EVENTTARGET.value = eventTarget.split("$").join(":");
            theform.__EVENTARGUMENT.value = eventArgument;
            theform.submit();
        }

    Any help would be highly appreciated
    Thanking you


  2. #2
    Super Moderator Json's Avatar
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    Default Re: Web Crawler

    This is where you need to run the javascript I guess or try to figure out a way to parse out the correct url with the information you have there, but if this is a general webcrawler I'd just leave it and focus on proper links.

    // Json

  3. #3
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    Default Re: Web Crawler

    Thanks for your response.
    The website that I want to crawl has most of the links of this sort. So I can't ignore these links.
    How to run JavaScript inside the java program? Any idea? Or how can I achieve the same that is being done in the JavaScript code inside the java program?


    Thanking you

  4. #4
    Super Moderator Json's Avatar
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    Default Re: Web Crawler

    Perhaps by using Rhino Javascript engine. Sorry I can't give you any examples though because I've never tried it.

    // Json

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    Default Re: Web Crawler

    I have never used and tried it.. Sorry

  6. #6
    Senile Half-Wit Freaky Chris's Avatar
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    Default Re: Web Crawler

    Which frame do you want, you can always just parse that info out....and then go to it as normal pretending its just a web URL with aspx?... with some variables on the end which you already know.

    Chris
    chris[at]javaprogrammingforums[dot]com

    Prifysgol Bangor University, North Wales